(Closed) Day care

I had real bad experience with a day care which is really close to my house.I have a two years old kid and I wanted to send him to this day care for about two days(to begin with) In a week.,for about three hrs. The lady who is running the school asked me stay there with my child so that he becomes comfortable with the environment . I agreed to do that.there was another person who was looking after the kids with the name jay. For the three days I went to the place with my son,I saw one 4 yrs old girl hitting another girl of her age .no one even noticed that. I saw that but decided not to interfere.on the fourth day I saw her pushing my son and another little girl of the same age. At that time as a parent I got concerned and I told very politely to jay that you have to be careful with this girl ,she is a bit violent with other kids. She did not accept what I said and I also did not take the things further.Next day I was told that I did something wrong by calling her violent in front of the parent.that made me think that jay was her mother and that why she did take my concern in a right way. But jay told me that she was not mother of the girl who was hitting other kids and she said I was wrong because I did not complain to the lady who is running the daycare.And I was given a letter in which it was written that I made an inappropriate comment and I labeled the child because she was not interacting with my kid. I was really hurt as my casual remark was taken on a different level.my husband who is always the kind who gets scared with all these things is telling me that this lady can put me in trouble. i do not know that what was my fault.although I have decided not to send my child to that daycare…I am really in tears .complaining about other kid hitting your child is wrong.?..